Window construction



3 Sheets-Sheet 1 9- f'zl enz oz 5124 C/fiVANJO/V r /47- 7-0 ENE 15 June 4, 1935. E. c. swANsoN wnmow CONSTRUCTION Filed Oct. 17, 1952 June 4, 1935. E. c. swANsoN WINDOW CONSTRUCTION Filed Oct. 17, 1932 3 Sheets-Sheet 2 Jizmnzor 5424 C. J'WANJON g d/gziizwm A7- roexve Yr Patented June 4, 1935 UNITED STATES 2.00m WINDOW CONSTRUCTION Earl C. Swansommm (nor-to Andersenrramecorponflomliayporgmm,

a corporation of Wkeonsin Application October 1'1, 1932, Serial No. 638,094

12 Claims. ((7!- 20-565) This invention relates to window constructions a d. more particularly, to a so-called double glazed window in which an auxiliary removable window pane is provided which, when in position,

forms a dead air space with the main window pane.

It is an object of my invention to provide a removable auxiliary window pane which may be used in connection with either casement windows or those of the sliding sash type to replace the usual storm sash, and which auxiliary window pane provides a. dead air space to reduce to a minimum the heat losses through the window.

Another object of the invention is to provide a removable auxiliary window pane which can be readily inserted into and removed from a main sash frame, which will be held securely in place by means which also serves to seal the space between the auxiliary pane and the main window pane.

Still another object of the invention is taprovide a removable auxiliary window pane having a frame provided with a weather strip by which the auxiliary pane is held securely in position in the main frame and which also serves to exclude air from the space between the panes.

A further and more specific object of the invention is to provide an auxiliary removable window pane having a metallic frame with integrally formed means for holding said auxiliary pane in position in the main sash frame and for sealing the air space between the two panes.

Other objects of .the invention and the advantages thereof will more fully appear as the description proceeds.

In the accompanying drawings I have disclosed a practical embodiment of my invention and several modifications in the construction of the auxiliary pane. These drawings are submitted for the purposes of illustration and it is to be understood that my invention is not limited to the details of construction shown but may be varied within the scope of the accompanying claims.

In the said drawings:

Fig. 1 is a vertical sectional view through a window showing the auxiliary pane of my invention in position in the main sash frame;

Fig. 2 is a view in front elevation of the main window with an auxiliary window in place, looking from the inside of a house or room;

Fig. 3 is a view in front elevation of the window of my invention, looking from the outside;

Fig. 4 is a view in front elevation of the auxiliary window frame of my invention;

Fig. 5 is a fragmentary view in vertical cross section of the main sash frame and the auxiliary window pane in position therein;

Pig. 6 is an enlarged detail view of the construction of the frame of the auxiliary window 5 pane; and

Figs. 7, 8, 9, 10 and 11 are detail views showing modifications of the auxiliary window frame and the means for securing it in the main sash frame.

Referring now to the drawings, the reference 10 numerals II and I2 indicate the head and sill of a window frame made in the usual manner.

In this figure, the window shown is of the casement type but, as will hereinafter more fully appear, my invention is equally applicable to win- 15 dows of the sliding sash type without any modiflcation.

Reference numeral l3, indicates a main sash frame in which is mounted a glass pane II. The sash frame I: projects inwardly beyond the plane 20 of the gins I4 and, adjacent to its inner edges II, is provided with a rabbet I5 which is slightly concave, as shown most clearly in Fig. 5.

The auxiliary window pane of my invention in cludes a frame I which is substantially T-shaped 5 in cross section and which is provided witha groove II for receiving the auxiliary glass ll. As will be seen particularly in Fig. 5, the auxiliary frameseatsintherabbet I5ofthemainsash. frame and a portion of the auxiliary frame over- 30 laps the inner side of the main sash frame.

In order that the auxiliary pane may be held securely in position in the main sash frame,

I have provided said auxiliary frame with a weather strip l9, attached to the auxiliary frame 35 in any suitable manner. In the embodiment of the invention shown in Fig. 5, the said weather strip I9 is secured to the auxiliary frame l6 by bending the weather strip and inserting it in a dove tail groove 20 formed in the auxiliary frame 40 IS. It will be noted that the weather strip 19 is slightly convex or bent and has a free edge so that the weather strip may be compressed when the auxiliary frame is inserted into the main sash frame.

The weather strip is will serve firmly to hold the auxiliary frame in the main sash frame and, at the same tlme, provides an air tight joint so as to prevent movement of air into and out of the space between the glass panes l4 and It.

The foregoing is believed to make clear the general construction and it is believed that its advantages will be appreciated. It will be seen that the auxiliary frame may quickly be pressed into position inthe rabbet formed in the main 8 sash frame and that it will be held securely in that position by the weather strip I9. By this arrangement an air tight space is provided between the panes H and [8. In order to assist in the manipulation of the auxiliary frame when putting it into position or when removing it, a suitable handle or tab 2| may be provided. As is seen in Fig. 1, when it is desired to insert the auxiliary frame in the main sash frame, it is only necessary to place the lower edge of. the auxiliary frame in the rabbet in the sash frame, whereupon the auxiliary frame may be pressed into position.

It will be noted that the auxiliary window is placed on the inside of the main sash so that it may readily be removed for cleaning or for storing away when not required. It will now be quite clear that an auxiliary window frame of the type thus far described may be applied to sliding sash windows as well as to windows of the casement type.

While I have provided a rabbet in the main sash frame in which the auxiliary frame is seated, this rabbet is not absolutely necessary as the auxiliary frame may be held in position by means of the weather strip regardless of the rabbet and will be properly positioned because of the fact that the auxiliary frame overlaps the main sash frame.

In Fig. '7 I have shown a modification of the auxiliary window frame, the difference being in the mode of attaching the weather strip is to the frame. In this modification a securing strip 22 is provided which is secured to the frame [6 by any suitable means, such as. screws 23. This securing strip 22 is provided with a concave recess 24 in which is seated one edge of the weather strip l9. By this arrangement the weather strip is securely held in place on the auxiliary frame l6.

Fig. 8 illustrates a modification in the manner of securing the auxiliary pane l8 in the frame Hi. In this embodiment a metal member 25 is provided which, at one end, bears against the glass It! and at the other end is seated in a notch 26 in the frame I 8. Also, in this modification the weather strip I9 is secured to the auxiliary frame It by bending the edge of the weather strip about a dove tail tennon 21, as clearly shown in said Figure 8.

Fig. 9 is a further modification of the structure shown in Fig. 8. In Fig. 9 the weather strip I9 and securing member 25 are integrally formed and are held in position in a notch 28 formed in the frame l6.

Fig. 10 shows a further modification of the auxiliary window pane. In this modification the frame of the auxiliary window pane and the meansfor securing it to the main sash frame are integrally formed. In this figure, reference numeral 30 indicates the auxiliary glass pane. Said pane is held in a metal frame 3| which is bent to form a portion 32 overlapping the main sash frame, and a free portion 33 having a rounded edge portion 34 seated in a round notch formed in the rabbet in the main sash frame. In this form of invention wherein the metal frame and the weather strip are integrally formed, a simple structure is provided which can be inserted into and removed from the main sash frame with great case.

Fig. 11 shows a. further modification of the construction of the auxiliary window. In this figure, I have again provided an integrally formed frame and weather strip, as in Fig. 10. In this modification the frame 35 is formed of a single piece of metal bent to provide a portion 36 overlapping the glass 31 and a portion 38 overlapping the main sash frame l3. A weather strip 39 is integrally formed with the frame 35 and seats in the concave rabbet IS in the main sash frame in much the same manner as the weather strip I9 shown in Fig. 1.

It will now be seen that I have provided a removable auxiliary window pane of simple construction and which can be readily inserted into or removed from a main sash frame of any type. The auxiliary frame is held in position by compressible means which also serves to prevent the movement of air into and out of the space between the auxiliary pane and the main pane. By this simple construction, I eliminate the use of additional expensive fastening devices.

I claim as my invention:

1. A window construction comprising a main glazed sash frame having inwardly facing edges spaced from the plane of the glass, an auxiliary glazed frame adapted to seat in said main sash frame, and means on said auxiliary frame for holding it securely in said main sash frame and for sealing the space between the main glass and the auxiliary glass.

2. A window construction comprising a main glazed sash frame having inwardly facing edges spaced from the plane of the glass and provided with a rabbet, an auxiliary glazed frame adapted to seat in said rabbet, and means on said auxiliary frame for frictionally holding it securely in said rabbet and for sealing the space between the main glass and the auxiliary glass.

3. A window construction comprising a main glazed sash frame having edges spaced from the plane of the glass and provided with a rabbet, a removable auxiliary glazed frame adapted to seat in said rabbet, and compressible means on said auxiliary frame for holding it securely in said rabbet and for sealing the space between the main glass and the auxiliary glass.

4. A window construction comprising a main glazed sash frame having edges spaced from the plane of the glass and provided with a rabbet, a removable auxiliary glazed frame adapted to seat in said rabbet, and a weather strip on said auxiliary frame having a compressible portion adapted frictionally to hold said auxiliary frame in said rabbet and to seal the space between the main glass and the auxiliary glass.

5. An auxiliary window comprising a metallic frame, means for holding a glass pane in said frame, and an integral compressible weather strip formed on said frame around the edges thereof.

6. An auxiliary window adapted to be connected to a window sash frame comprising a metallic frame, means for holding a glass pane in said frame, a portion of said frame extending beyond the edges of said glass pane to overlap the edges of the main sash frame, and an integral compressible weather strip formed on said frame around the edges thereof.

'7. In combination, a window sash frame having sash bars for forming frame members for supporting window panes, said sash and bars having the conventional rabbets on the inner and outer sides thereof, window panes permanently mounted in the rabbets on the outer side of said frame, insulating panes and yielding means between the edges of said pane and the bottom of the rabbets on the inner side of said frame for detachably mounting said last named panes in said rabbets.

8. In combination, a .window sash provided with grooves, an insulating member seated in said grooves and means expansible in the plane or said member for securing the same within said sash.

9. In combination, a window sash, sash bars in said sash for forming a plurality of window pane openings, a pane of glass in each of said openings on one side of said sash, an insulating member opposite each 01' said panes on the other side of said sash and means for automatically securing each member in said sash when forced by pressure normal to the plane of said sash into position therein.

10. An insulating unit comprising a pane oi transparent material, means extending about the edge of said material for securing the same in a support, said means being expansible in the plane of said pane for engaging said support with a pressure sumcient to retain the pane therein under normal conditions.

11. In combination, a window sash having a rabbet therein, an insulating member and expansible means engaging the edge of said member and one wall of said rabbet for securing said member within said rabbet.

12. In combination, a window sash, a yielding insulating member, said sash being provided with a recess for receiving the edges of said member and for holding the same therein when said member is, forced to position therein by pressure applied thereto at right angles to the plane 0! said member.

EARL C. SWANSON. 

